<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <title>lines-airline-china</title>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/hmap-js/dist/hmap.css">
  <style>
    html, body, #map {
      height: 100%;
      padding: 0;
      margin: 0;
    }
    .hmap-control-zoom {
      right: 30px;
    }
  </style>
</head>
<body>
<div id="map"></div>
<script src="https://cdn.jsdelivr.net/npm/hmap-js/dist/hmap.js"></script>
<script src="https://cdn.jsdelivr.net/npm/echarts/dist/echarts.js"></script>
<script src="../ajax.js"></script>
<script src="https://cdn.jsdelivr.net/npm/ol3-echarts/dist/ol3Echarts.js"></script>
<!--<script src="../../../dist/ol3Echarts.js"></script>-->
<script>
  var map = new HMap('map', {
    controls: {
      loading: true,
      zoomSlider: true,
      fullScreen: false
    },
    view: {
      center: [116.28245, 39.92121],
      projection: 'EPSG:4326',
      zoom: 9, // resolution
    },
    baseLayers: [
      {
        layerName: 'vector',
        isDefault: true,
        layerType: 'TileXYZ',
        projection: 'EPSG:3857',
        tileGrid: {
          tileSize: 256,
          extent: [-2.0037507067161843E7, -3.0240971958386254E7, 2.0037507067161843E7, 3.0240971958386205E7],
          origin: [-2.0037508342787E7, 2.0037508342787E7],
          resolutions: [
            156543.03392800014,
            78271.51696399994,
            39135.75848200009,
            19567.87924099992,
            9783.93962049996,
            4891.96981024998,
            2445.98490512499,
            1222.992452562495,
            611.4962262813797,
            305.74811314055756,
            152.87405657041106,
            76.43702828507324,
            38.21851414253662,
            19.10925707126831,
            9.554628535634155,
            4.77731426794937,
            2.388657133974685
          ]
        },
        layerUrl: 'http://cache1.arcgisonline.cn/arcgis/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}'
      }
    ]
  });
  var echartslayer = new ol3Echarts(null, {
    hideOnMoving: true,
    hideOnZooming: true
  });
  echartslayer.appendTo(map.getMap());
  getJSON('../../json/lines-bus.json', function (rawData) {
    var hStep = 300 / (rawData.length - 1);
    var busLines = [].concat.apply([], rawData.map(function (busLine, idx) {
      var prevPt;
      var points = [];
      for (var i = 0; i < busLine.length; i += 2) {
        var pt = [busLine[i], busLine[i + 1]];
        if (i > 0) {
          pt = [
            prevPt[0] + pt[0],
            prevPt[1] + pt[1]
          ];
        }
        prevPt = pt;

        points.push([pt[0] / 1e4, pt[1] / 1e4]);
      }
      return {
        'coords': points,
        'lineStyle': {
          'normal': {
            'color': echarts.color.modifyHSL('#5A94DF', Math.round(hStep * idx))
          }
        }
      };
    }));
    var option = {
      'series': [
        {
          'type': 'lines',
          'polyline': true,
          'data': busLines,
          'lineStyle': {
            'normal': {
              'width': 0
            }
          },
          'effect': {
            'constantSpeed': 20,
            'show': true,
            'trailLength': 0.5,
            'symbolSize': 1.5
          },
          'zlevel': 1
        }
      ]
    };
    echartslayer.setChartOptions(option);
  });
</script>
</body>
</html>
